<template>
  <section class="loginContainer">
    <div class="loginInner">
      <div class="login_header">
        <h2 class="login_logo">硅谷外卖</h2>
        <div class="login_header_title">
          <a href="javascript:;" :class="{on:loginWay}" @click="loginWay=true">短信登录</a>
          <a href="javascript:;" :class="{on:!loginWay}" @click="loginWay=false">密码登录</a>
        </div>
      </div>
      <div class="login_content">
        <form @submit.prevent="login">
          <div :class="{on:loginWay}">
            <section class="login_message">
              <input type="tel" maxlength="11" placeholder="手机号" v-model="phone">
              <button :disabled="!rightPhone" class="get_verification"
                      :class="{right_phone:rightPhone}" @click.prevent="getCode">
                {{computerTime>0 ? `已发送${computerTime}s`:'获取验证码'}}
              </button>
            </section>
            <section class="login_verification">
              <input type="tel" maxlength="8" placeholder="验证码" v-model="code">
            </section>
            <section class="login_hint">
              温馨提示：未注册硅谷外卖帐号的手机号，登录时将自动注册，且代表已同意
              <a href="javascript:;">《用户服务协议》</a>
            </section>
          </div>
          <div :class="{on:!loginWay}">
            <section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="手机/邮箱/用户名" v-model="name">
              </section>
              <section class="login_verification">
                <input type="text" maxlength="8" placeholder="密码"
                       v-if="showPwd" v-model="pwd">
                <input type="password" maxlength="8" placeholder="密码"
                       v-else v-model="pwd">
                <div class="switch_button " @click="showPwd=!showPwd" :class="showPwd?'on':'off'">
                  <div class="switch_circle" :class="{right:showPwd}"></div>
                  <span class="switch_text">{{showPwd?'abc':'...'}}</span>
                </div>
              </section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="验证码" v-model="captcha">
                <img class="get_verification" src="http://localhost:4000/captcha"
                     alt="captcha" @click="getCaptcha" ref="captcha">
              </section>
            </section>
          </div>
          <button class="login_submit">登录</button>
        </form>
        <a href="javascript:;" class="about_us">关于我们</a>
      </div>
      <a href="javascript:" class="go_back" @click="goback">
        <i class="iconfont icon-jiantou-px-"></i>
      </a>
    </div>
    <AlterTip :alert-text="alertText" v-show="showAlert" @closeTip="closeTip"></AlterTip>
  </section>

</template>
<script>
  import AlterTip from '../../components/AlertTip/AlterTip.vue'
  import {reqSendCode, reqLoginSms, reqPwdLogin} from '../../api'
  import {mapActions} from 'vuex'
  export default {
    data () {
      return {
        loginWay: true,//true代表短信登陆，false代表短信登陆
        phone: '',//代表电话号码
        computerTime: 0,//代表计时的时间
        showPwd: false,//是否显示密码
        pwd: '',//密码
        code: '',//手机号登陆的短信验证码
        name: '',//邮箱，手机，账号登陆
        captcha: '',//图形验证码
        alertText: '',//提示文本
        showAlert: false,//是否显示提示框
      }
    },
    methods: {
      goback () {
        // 点击返回，使用程序化导航
        this.$router.go(-1)
      },
      //异步获取短信验证码
      async getCode () {

        //如果当前没有计时
        if (!this.computerTime) {
          //启动倒计时
          this.computerTime = 30
          this.timeId = setInterval(() => {
            this.computerTime--
            if (this.computerTime <= 0) {
              //停止计时
              clearInterval(this.timeId)
            }
          }, 1000)

          //发送ajax请求（向指定手机号发送短信验证码）
          const result = await reqSendCode(this.phone)
          console.log(result)
          console.log(this.phone)
          if (result.code === 1) {
            //显示提示框
            this.ShowAlert(result.msg)
            //停止计时器
            if (this.computerTime) {
              this.computerTime = 0
              clearInterval(this.timeId)
              this.timeId = undefined
            }
          }
        }
      },
      //抽取一个函数
      ShowAlert (alertText) {
        this.showAlert = true
        this.alertText = alertText
      },
      async login () {
        //前台表单验证
        //1.先判断是什么登陆方式
        let result
        if (this.loginWay) {
          //2.短信验证要的是手机号验证，短信验证码验证，正确手机号验证
          const {rightPhone, phone, code} = this
          if (!this.rightPhone) {//如果手机号格式不对，就提示错误
            this.ShowAlert('手机号格式不正确，请重新填写')
          }//正确就继续判定，短信验证码是否正确 /^\d{6}$/.test(code),格式不对就提示错误
          else if (!/^\d{6}$/.test(code)) {

            this.ShowAlert('短信验证码格式不正确，请重新填写')
            return
          }
          //发送ajax请求短信登陆
          result = await reqLoginSms(phone, code)

        } else {
          //3.密码登陆验证要的是用户名验证，密码验证，图形验证码验证
          const {name, pwd, captcha} = this
          if (!this.name) {
            //验证用户名是否有填写，否则提示错误
            this.ShowAlert('用户名必须填写')
          } else if (!this.pwd) {
            //验证密码是否有填写，否则提示错误
          } else if (!this.captcha) {
            //验证图形验证码是否有填写，否则提示错误
            this.ShowAlert('图形必须填写')
            return
          }
          //发送ajax请求密码登陆
          result = await reqPwdLogin({name, pwd, captcha})

        }
         //停止计时器
            if (this.computerTime) {
              this.computerTime = 0
              clearInterval(this.timeId)
              this.timeId = undefined
            }
        //根据结果数据处理

          if (result.code == 0) {
            const user = result.data
            //将user保存到vuex的state
              this.$store.dispatch('recordUser',user)
            //去个人中心界面
            this.$router.replace('/profile')
          } else {
            //显示新的图片验证码
            const msg = result.msg
            this.getCaptcha()
            //显示警告提示框
            this.ShowAlert(msg)
          }

      },
      closeTip () {
        //关闭警告框函数
        this.showAlert = false
        this.alertText = ''
      },
      getCaptcha () {
        //获取一个新的图片验证码
        //每次指定的src要不一样才可以，这里
        this.$refs.captcha.src = 'http://localhost:4000/captcha?time' + Date.now()
      },


    },

    computed: {
      rightPhone () {
        let Rex = new RegExp(/^[1]\d{10}/)
        return Rex.test(this.phone)
      },
    },
    components: {
      AlterTip
    }
  }
</script>
<style lang="stylus" rel="stylesheet/stylus">
  @import "../../common/stylus/mixins.styl"
  .loginContainer
    width 100%
    height 100%
    background #fff

    .loginInner
      padding-top 60px
      width 80%
      margin 0 auto

      .login_header
        .login_logo
          font-size 40px
          font-weight bold
          color #02a774
          text-align center

        .login_header_title
          padding-top 40px
          text-align center

          > a
            color #333
            font-size 14px
            padding-bottom 4px

            &:first-child
              margin-right 40px

            &.on
              color #02a774
              font-weight 700
              border-bottom 2px solid #02a774

      .login_content
        > form
          > div
            display none

            &.on
              display block

            input
              width 100%
              height 100%
              padding-left 10px
              box-sizing border-box
              border 1px solid #ddd
              border-radius 4px
              outline 0
              font 400 14px Arial

              &:focus
                border 1px solid #02a774

            .login_message
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff

              .get_verification
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)
                border 0
                color #ccc
                font-size 14px
                background transparent

                &.right_phone
                  color black

            .login_verification
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff

              .switch_button
                font-size 12px
                border 1px solid #ddd
                border-radius 8px
                transition background-color .3s, border-color .3s
                padding 0 6px
                width 30px
                height 16px
                line-height 16px
                color #fff
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)

                &.off
                  background #fff

                  .switch_text
                    float right
                    color #ddd

                &.on
                  background #02a774

                > .switch_circle
                  //transform translateX(27px)
                  position absolute
                  top -1px
                  left -1px
                  width 16px
                  height 16px
                  border 1px solid #ddd
                  border-radius 50%
                  background #fff
                  box-shadow 0 2px 4px 0 rgba(0, 0, 0, .1)
                  transition transform .3s

                  &.right
                    transform translateX(30px)

            .login_hint
              margin-top 12px
              color #999
              font-size 14px
              line-height 20px

              > a
                color #02a774

          .login_submit
            display block
            width 100%
            height 42px
            margin-top 30px
            border-radius 4px
            background #4cd96f
            color #fff
            text-align center
            font-size 16px
            line-height 42px
            border 0

        .about_us
          display block
          font-size 12px
          margin-top 20px
          text-align center
          color #999

      .go_back
        position absolute
        top 5px
        left 5px
        width 30px
        height 30px

        > .iconfont
          font-size 20px
          color #999
</style>
